So because white men have been doing it for millennia the solution is to mimic their wrongdoings?
Koharu's memory is selective. I'm old enough to remember young men coming home from the Vietnam War experience the Cancel Culture up close and personal, being called War Criminals (often by cowards who deliberately avoided the draft), and being viewed with skepticism by potential employers.
I was a young peacenik back then, with a McGovern t-shirt fit for a 15 year old. But I NEVER criticized people for going to war, and I never viewed American Soldiers as War Criminals. (And they're not and they weren't.)
I'll agree with the letter by the OP. I just hope the OP believes it. as well as the rest of the forum.